PE Hub -- Conatus Pharmaceuticals, a San Diego-based drug company focused on inflammation and liver disease, has acquired the Idun Pharmaceuticals subsidiary of Pfizer Inc. No financial terms were disclosed. Conatus was founded in July 2005 by the executive management team of Idun Pharma, following its sale to Pfizer. It has raised around $27.5 million in VC funding, from Aberdare Ventures, Advent Venture Partners, Bay City Capital and Gilde Healthcare Partners.